I've been having an interest in my tenant. But above many reasons, I avoid pursuing the interest mainly because I'm the landlord's son. women usually aren't sexually interested in me. If she returned my interest, it'd probably only be because I'm the landlord's son.
That's not cool for me. She wouldn't like me for who I am, but rather for what I can inherit. Any relationship, not founded on natural love or attraction, isn't safe for me and can societially or legally endanger me more than other types of natural romantic relationships.
Honestly, the only reason why I've gotten more interested is because I hear some people, probably her, having sex upstairs, some nights. It's not fair because there's little I can do to block the noise. If I were the landord though, I'd evict her for the noise pollution.